<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
	<!--
		action: 服务器请求路径
		method: get（明文，走地址栏1024字符）/post(打包，没有大小限制)
	 -->
	<form action="login" method="post">
		用户名: <input type="text" name="username"/>
		密码 : <input type="password" name="userpwd"/>
		<input type="submit"> 
	</form>
</body>
</html>